3720665433 has 8 divisors (see below), whose sum is σ = 4966096608. Its totient is φ = 2477838944.

The previous prime is 3720665369. The next prime is 3720665437. The reversal of 3720665433 is 3345660273.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3720665433 - 2⁶ = 3720665369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3720665391 and 3720665400.

It is not an unprimeable number, because it can be changed into a prime (3720665437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647835 + ... + 653552.

It is an arithmetic number, because the mean of its divisors is an integer number (620762076).

Almost surely, 2^3720665433 is an apocalyptic number.

It is an amenable number.

3720665433 is a deficient number, since it is larger than the sum of its proper divisors (1245431175).

3720665433 is a wasteful number, since it uses less digits than its factorization.

3720665433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302343.

The product of its (nonzero) digits is 272160, while the sum is 39.

The square root of 3720665433 is about 60997.2575858948. The cubic root of 3720665433 is about 1549.5545626724.

The spelling of 3720665433 in words is "three billion, seven hundred twenty million, six hundred sixty-five thousand, four hundred thirty-three".